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BioClay^(TM)prolongs RNA interference-mediated crop protection against Botrytis cinerea

Journal of Integrative Plant Biology 2022年第11期64卷 2187-2198页

作者： Jonatan Niño-Sánchez Prabhakaran T.Sambasivam anne sawyer Rachael Hamby Angela Chen Elizabeth Czislowski Peng Li Narelle Manzie Donald M.Gardiner Rebecca Ford Zhi Ping Xu Neena Mitter Hailing Jin Department of Microbiology&Plant Pathology Center for Plant Cell BiologyInstitute for Integrative Genome BiologyUniversity of CaliforniaRiversideCalifornia92521USA Department of Plant Production and Forest Resources University of ValladolidPalencia 34004Spain iuFOR‐Sustainable Forest Management Research Institute University of Valladolid–INIAPalencia 34004Spain Centre for Planetary Health and Food Security Griffith UniversityNathanQueensland4111Australia School of Chemistry and Molecular Biosciences The University of QueenslandSt LuciaQueensland4072Australia Queensland Alliance for Agriculture and Food Innovation Centre for Horticultural ScienceThe University of QueenslandSt LuciaQueensland4072Australia School of Agriculture and Food Sciences The University of QueenslandSt LuciaQueensland4072Australia Australian Institute for Bioengineering and Nanotechnology The University of QueenslandSt LuciaQueensland4072Australia

One of the most promising tools for the control of fungal plant diseases is spray-induced gene silencing(SIGS).In SIGS,small interfering RNA(siRNA)or double-stranded RNA(dsRNA)targeting essential or virulence-related pathogen genes are exogenously applied to plants and postharvest products to trigger RNA interference(RNAi)of the targeted genes,inhibiting fungal growth and ***,SIGS is limited by the unstable nature of RNA under environmental *** use of layered double hydroxide or clay particles as carriers to deliver biologically active dsRNA,a formulation termed BioClay^(TM),can enhance RNA durability on plants,prolonging its activity against ***,we demonstrate that dsRNA delivered as BioClay can prolong protection against Botrytis cinerea,a major plant fungal pathogen,on tomato leaves and fruit and on mature chickpea *** increased the protection window from 1 to 3 weeks on tomato leaves and from 5 to 10 days on tomato fruits,when compared with naked *** flowering chickpea plants,BioClay provided prolonged protection for up to 4 weeks,covering the critical period of poding,whereas naked dsRNA provided limited *** research represents a major step forward for the adoption of SIGS as an eco-friendly alternative to traditional fungicides.

关键词： Bio Clay double stranded RNA layered double hydroxide RNA interference spray-induced gene silencing

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